He has more than one research, he even has a factory where he provides materials to a big company here in Brasil. It is irrelevant for this discussion anyways, since it is completely unrelated.
Well it could have been the case that he still makes money from the drug, just not from directly selling it. People could make donations, or he could give seminars where people pay to learn how to get healthy, or whatever. Or people prefer to do business with him because he has such a good reputation. So it's not irrelevant.